to beat a dead conversation past the point of anyone caring other than me...
if you looked at the minute by minute activity, an honest effort to take a class should produce a fairly detectable minute by minute signature
for example, someone answering the questions who hasn't watched the whole video, unlikely to be an honest effort
there are enough data points in there, that detecting cheating should really be a question of mining the right data points
http://news.ycombinator.com/item?id=4413474
to beat a dead conversation past the point of anyone caring other than me...
if you looked at the minute by minute activity, an honest effort to take a class should produce a fairly detectable minute by minute signature
for example, someone answering the questions who hasn't watched the whole video, unlikely to be an honest effort
there are enough data points in there, that detecting cheating should really be a question of mining the right data points
http://news.ycombinator.com/item?id=4413474